| WANG Ben,LI Xinyang,ZHAO Zhe,ZHANG Qi,ZHANG Hao,ZHU Tianlong.Effect of Ultrasonic Vibration on Friction and Wear of High Stress Assembly Contact Surface[J],54(9):91-101 |
| Effect of Ultrasonic Vibration on Friction and Wear of High Stress Assembly Contact Surface |
| Received:July 17, 2024 Revised:September 25, 2024 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2025.09.007 |
| KeyWord:ultrasonic vibration high stress friction force wear morphology abrasion degree |
| Author | Institution |
| WANG Ben |
School of Electromechanical Engineering, Shenyang Aerospace University, Liaoning Shenyang , China;Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft Shenyang Aerospace University, Ministry of Education, Shenyang , China |
| LI Xinyang |
School of Electromechanical Engineering, Shenyang Aerospace University, Liaoning Shenyang , China;Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft Shenyang Aerospace University, Ministry of Education, Shenyang , China |
| ZHAO Zhe |
AECC Shenyang Engine Research Institute, Shenyang , China |
| ZHANG Qi |
School of Electromechanical Engineering, Shenyang Aerospace University, Liaoning Shenyang , China;Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft Shenyang Aerospace University, Ministry of Education, Shenyang , China |
| ZHANG Hao |
School of Electromechanical Engineering, Shenyang Aerospace University, Liaoning Shenyang , China;Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft Shenyang Aerospace University, Ministry of Education, Shenyang , China |
| ZHU Tianlong |
School of Electromechanical Engineering, Shenyang Aerospace University, Liaoning Shenyang , China;Key Laboratory of Rapid Development & Manufacturing Technology for Aircraft Shenyang Aerospace University, Ministry of Education, Shenyang , China |
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| Abstract: |
| The assembly research of the aero-engine fan disk group is very important. The assembly quality of the engine fan disk group directly affects the reliability and safety of the engine. In this study, the ultrasonic vibration-assisted pressing method is used to improve the excessive friction and serious wear between the contact surfaces of the fan disk group caused by traditional manual assembly, which affects its assembly efficiency and assembly quality. The purpose of this study is to clarify the influence of different ultrasonic amplitudes on the friction and wear between the contact surfaces during the high-stress assembly process of the fan disc group. Firstly, aiming at the high stress assembly process of the fan disk group, the mathematical model of contact sliding and the wear model of asperity on the contact surface are established. The theoretical innovation and analysis of friction force and wear degree between friction pairs under ultrasonic vibration are carried out by analytical method. Then, on the ultrasonic vibration assisted press-mounting test platform, an ultrasonic press-mounting test is carried out based on the test components simulating the fan disk group structure. The friction between the contact surfaces of the components under different ultrasonic amplitudes is recorded, and the friction reduction rate is obtained by comparing with the ordinary press-mounting, and then it is compared with the theoretical model. Finally, the wear morphology and wear degree of the contact surface are observed by scanning electron microscopy, and the contact surface material is tested by EDS spectrometer. The results show that when the ultrasonic amplitude is 15 μm, 28 μm, 41 μm and 58 μm, compared with the ultrasonic amplitude of 0 μm, the friction force between the contact surfaces of the components is reduced by 21.9%, 22.6%, 41.1% and 58.9%, respectively. The friction force gradually decreases with the increase of the amplitude, and the friction reduction effect is remarkable. The theoretical model is verified to have high accuracy and can be used to predict the change trend of the friction reduction rate with the speed ratio in the actual pressing process. When the ultrasonic amplitude is 0 μm, there is obvious adhesive wear on the contact surface, and there are wide and deep furrows on the surface of the wear marks. After applying ultrasound, with the increase of amplitude, the area and depth of adhesive wear on the contact surface decrease first and then increase. When the amplitude increases to 28 μm, the degree of adhesive wear reaches the lowest, which is 85.8% and 82.1% lower than that of ordinary pressing. In addition, the study also finds that the width and depth of the furrow on the surface of the wear scar first decreases with the increase of the amplitude, and tends to be stable when the ultrasonic amplitude reaches 28 μm. Because the contact surface of the component is affected by the longitudinal amplitude, the area of repeated friction increases, and the heat in the contact area of the component surface increases greatly at the same time, so the ablation occurs on the contact surface of the component. When the amplitude is higher than 41 μm, the degree of ablation changes from local mild to large area severe. By comparing the material element analysis of the non-ablated and ablated parts of the contact surface of the test piece, it is concluded that the ablation phenomenon is a rapid oxidation reaction that occurs under certain temperature conditions. Through the combination of theory and experiment, the key conclusion is drawn: ultrasonic vibration has an anti-friction effect, and ultrasonic amplitude is the main factor affecting the anti-friction effect. Under certain ultrasonic amplitude, with the increase of amplitude, ultrasonic vibration can reduce the friction between the contact surfaces of the components and improve the quality of the contact surface. When the amplitude is 28 μm, it has the best effect on improving the quality of the high-stress assembly contact surface. The research results provide theoretical guidance and technical support for improving the assembly efficiency and quality of aero-engine fan disk assembly. |
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